[ https://issues.apache.org/jira/browse/FLINK-5464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chesnay Schepler reassigned FLINK-5464: --------------------------------------- Assignee: Chesnay Schepler > MetricQueryService throws NullPointerException on JobManager > ------------------------------------------------------------ > > Key: FLINK-5464 > URL: https://issues.apache.org/jira/browse/FLINK-5464 > Project: Flink > Issue Type: Bug > Components: Webfrontend > Affects Versions: 1.2.0 > Reporter: Robert Metzger > Assignee: Chesnay Schepler > > I'm using Flink 699f4b0. > My JobManager log contains many of these log entries: > {code} > 2017-01-11 19:42:05,778 WARN > org.apache.flink.runtime.webmonitor.metrics.MetricFetcher - Fetching > metrics failed. > akka.pattern.AskTimeoutException: Ask timed out on > [Actor[akka://flink/user/MetricQueryService#-970662317]] after [10000 ms] > at > akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:334) > at akka.actor.Scheduler$$anon$7.run(Scheduler.scala:117) > at > scala.concurrent.Future$InternalCallbackExecutor$.scala$concurrent$Future$InternalCallbackExecutor$$unbatchedExecute(Future.scala:694) > at > scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:691) > at > akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(Scheduler.scala:474) > at > akka.actor.LightArrayRevolverScheduler$$anon$8.executeBucket$1(Scheduler.scala:425) > at > akka.actor.LightArrayRevolverScheduler$$anon$8.nextTick(Scheduler.scala:429) > at > akka.actor.LightArrayRevolverScheduler$$anon$8.run(Scheduler.scala:381) > at java.lang.Thread.run(Thread.java:745) > 2017-01-11 19:42:07,765 WARN > org.apache.flink.runtime.metrics.dump.MetricQueryService - An exception > occurred while processing a message. > java.lang.NullPointerException > at > org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.serializeGauge(MetricDumpSerialization.java:162) > at > org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.access$300(MetricDumpSerialization.java:47) > at > org.apache.flink.runtime.metrics.dump.MetricDumpSerialization$MetricDumpSerializer.serialize(MetricDumpSerialization.java:90) > at > org.apache.flink.runtime.metrics.dump.MetricQueryService.onReceive(MetricQueryService.java:109) > at > akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:167) > at akka.actor.Actor$class.aroundReceive(Actor.scala:467) > at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:97) > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) > at akka.actor.ActorCell.invoke(ActorCell.scala:487) > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238) > at akka.dispatch.Mailbox.run(Mailbox.scala:220) > at > akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397) > at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) > at > scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) > at > scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) > at > scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)